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Yamaha DSP-AX757SE Service Manual

Yamaha DSP-AX757SE
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50
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
AMP ADJUSTMENT/アンプ部調整
アイドリング電流確認
1. 電源投入直後、下表のA欄の抵抗の端子間電圧を測定し、
0.1mV 10.0mV であることを確認してください。
2. 電圧が 10mV を越えている場合は、下表のB欄の抵抗を
カットし、電圧を再確認してください。
注意:パワーアンプ修理後に10.0mVを超えている場合は、抵抗を
カットする前に故障箇所を調べてください。
3. 60 分後、電圧が 0.2mV 15.0mV であることを確認して
ください。
CONFIRMATION OF IDLING CURRENT
P.C.B. A CHANNEL B
MAIN (1) P.C.B. R45 FRONT L ch R38
R46 FRONT R ch R39
R50 CENTER R37
R47 SURROUND L ch R34
R48 SURROUND R ch R35
R49 SURROUND BACK R ch R36
POWER (1) P.C.B. R398 SURROUND BACK L ch R395
0.1mV ~ 10.0mV
(DC)
0.1mV ~ 10.0mV
(DC)
R45 (FRONT L ch)
R46 (FRONT R ch)
R50 (CENTER)
R38 (FRONT L ch)
R39 (FRONT R ch)
R37 (CENTER)
R34 (SURROUND L ch)
R35 (SURROUND R ch)
R36 (SURROUND BACK R ch)
R395 (SURROUND BACK L ch)
R47 (SURROUND L ch)
R48 (SURROUND R ch)
R49 (SURROUND BACK R ch)
R398 (SURROUND BACK L ch)
Cut off
カット
<Position for Adjusting MAIN (1) P.C.B.>
1. Immediately after the power is turned on, measure the
voltage across resistor terminals in the column A in the
table below and confirm that the measured value is be-
tween 0.1mV and 10.0mV.
2. If the measured voltage exceeds 10.0mV, open (cutoff)
the resistor in the column B in the table below and re-
confirm the voltage.
Attention:
If the idling current exceeds 10.0mV after a power ampli-
fier repair, check for a defective component before cut-
ting the resistor.
3. Confirm that the voltage is between 0.2mV and 15.0mV
after 60 minutes.
Cloth
布
WireLea
d
リード線
MAIN (1) P.C.B.
G1

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Yamaha DSP-AX757SE Specifications

General IconGeneral
BrandYamaha
ModelDSP-AX757SE
CategoryReceiver
LanguageEnglish

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